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Finding the Fourth Proportional to 170,783.40, 256,175.10 and 165,862.65

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Solution

The fourth proportional to 170,783.40, 256,175.10 and 165,862.65 is: 248,793.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,783.40 : 256,175.10 = 165,862.65 : x
  2. Step 2: Convert to fraction form
    170,783.40/256,175.10 = 165,862.65/x
  3. Step 3: Cross multiply
    170,783.40x = 256,175.10 × 165,862.65
  4. Step 4: Simplify right side
    170,783.40x = 42,489,880,950.02
  5. Step 5: Solve for x
    x = 42,489,880,950.02/170,783.40
  6. Step 6: Final answer
    x = 248,793.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.